Needed - Pilot Bushing Part Number - ZR-1 Net Registry Forums

Hammer · 02-13-2010

GM Part Number for the bronze pilot bushing needed.
I've looked and can't find it so I'm hoping someone has it handy.

Thanks.

02-13-2010

Quote:

Originally Posted by Hammer

GM Part Number for the bronze pilot bushing needed.
I've looked and can't find it so I'm hoping someone has it handy.

Thanks.

Here you go John, this is roller bearing type though: GM 14061685

Factory one is 10125896

Hammer · 02-13-2010

Quote:

Originally Posted by HAWAIIZR-1

Here you go John, this is roller bearing type though: GM 14061685

Factory one is 10125896

The clutch I got from Schubert had the Timken bearing in it. From what I've read, those are not to be used as they are intended for low RPM applications.

I'm not using the clutch disk either as I am installing the Fidanza flywheel.

Thanks Craig.

02-13-2010

John,

Last night after replying to you post I happened to read my Corvette Enthusiast April issue and there was an article about clutches pertaining to older Corvettes and the tech from magazine (John Hinckley) stated that the guy should only use a 100% Oillite bronze bushing which won't attract a magnet and gave GM part # 3752487, #10125896, NAPA #BK-6151161 and Federal-Mogul #PB-656-HD as the correct known material (Oillite bronze). Now I am confused because I was going by ZF Doc's site as to which pilot bearing to use and it quoted the 14061685 roller bearing type.

http://www.zfdoc.com/techinfo.htm

I noticed my crank currently has the roller bearing design in it now and I know the clutch was replaced right before I bought it.

Hammer · 02-13-2010

Quote:

Originally Posted by HAWAIIZR-1

John,

Last night after replying to you post I happened to read my Corvette Enthusiast April issue and there was an article about clutches pertaining to older Corvettes and the tech from magazine (John Hinckley) stated that the guy should only use a 100% Oillite bronze bushing which won't attract a magnet and gave GM part # 3752487, #10125896, NAPA #BK-6151161 and Federal-Mogul #PB-656-HD as the correct known material (Oillite bronze). Now I am confused because I was going by ZF Doc's site as to which pilot bearing to use and it quoted the 14061685 roller bearing type.

http://www.zfdoc.com/techinfo.htm

I noticed my crank currently has the roller bearing design in it now and I know the clutch was replaced right before I bought it.

Just sent an email to Marc. I'll let you know what he says.

jonszr1 · 02-13-2010

bill told me if i was going to do any drag racing at all to stay away from the roller bearing one . i believe he has a few extra of the one you need . he also says do not put any lube on the pilot bushing when installing the tranny.

flyin ryan · 02-13-2010

I put a Roller bearing in my 90 when I had it apart. Can't convince me they are 'Not' good to use. I've used them for years in everything & anything, never had any problem's, ever. Do certain applications 'Need' one, maybe not, but they're not going to hurt. The Bronze Oillite is really good material though, wouldn't be afraid to use them either.

jonszr1 · 02-13-2010

nice to know about the roller bearing one . i was just going off what bill boudreau shared with me .

Hammer · 02-14-2010

Here's a message I got from Marc regarding the bushing:

Quote:

I use the roller bearing pn 14061685. I never have a problem with it. Add grease to it when the clutch is serviced.

I have seen the problem with the bronze bushing spinning and chattering in the crankshaft. This happened to many factory built engines when they were in warranty. GM repaired them with the roller bearing. I have had a problem with the bronze bushing reducing id on installation and fitting tight on the transmission shaft.

Don't apply pressure behind the old bushing. Doing so can dislodge the soft plug in the crankshaft. If that is done you will have a nightmarish oil leak to repair. If the old bushing fits tight in the crankshaft and is not discolored it can be left in service.

Best of luck.

Marc

jonszr1 · 02-15-2010

i would like to add one last thing if a roller bearing pilot does fail .the cost could be very dear . 682.10 for the input shaft 240 labor to install and the cost of a new clutch. also maybe blowing out the soft oil seal in the crank. its for that reason i err to the bushing . i mean no disrecpect to anyone just wanted to share the what ifs and the costs that could be related to use of one over the other . have a great day

02-13-2010	#4
HAWAIIZR-1 Guest Posts: n/a	Re: Needed - Pilot Bushing Part Number John, Last night after replying to you post I happened to read my Corvette Enthusiast April issue and there was an article about clutches pertaining to older Corvettes and the tech from magazine (John Hinckley) stated that the guy should only use a 100% Oillite bronze bushing which won't attract a magnet and gave GM part # 3752487, #10125896, NAPA #BK-6151161 and Federal-Mogul #PB-656-HD as the correct known material (Oillite bronze). Now I am confused because I was going by ZF Doc's site as to which pilot bearing to use and it quoted the 14061685 roller bearing type. http://www.zfdoc.com/techinfo.htm I noticed my crank currently has the roller bearing design in it now and I know the clutch was replaced right before I bought it.

02-13-2010	#6
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: Needed - Pilot Bushing Part Number bill told me if i was going to do any drag racing at all to stay away from the roller bearing one . i believe he has a few extra of the one you need . he also says do not put any lube on the pilot bushing when installing the tranny.

02-13-2010	#7
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Re: Needed - Pilot Bushing Part Number I put a Roller bearing in my 90 when I had it apart. Can't convince me they are 'Not' good to use. I've used them for years in everything & anything, never had any problem's, ever. Do certain applications 'Need' one, maybe not, but they're not going to hurt. The Bronze Oillite is really good material though, wouldn't be afraid to use them either. __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.

02-13-2010	#8
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: Needed - Pilot Bushing Part Number nice to know about the roller bearing one . i was just going off what bill boudreau shared with me .

02-13-2010	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Needed - Pilot Bushing Part Number GM Part Number for the bronze pilot bushing needed. I've looked and can't find it so I'm hoping someone has it handy. Thanks. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

02-15-2010	#10
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: Needed - Pilot Bushing Part Number i would like to add one last thing if a roller bearing pilot does fail .the cost could be very dear . 682.10 for the input shaft 240 labor to install and the cost of a new clutch. also maybe blowing out the soft oil seal in the crank. its for that reason i err to the bushing . i mean no disrecpect to anyone just wanted to share the what ifs and the costs that could be related to use of one over the other . have a great day